Here's a short list of information a Bug-Report should contain including some basic answers. Of cause a more detailed report is usually more useful, so these are just the basics each bug-report needs to be helpful.

1. What happend?
   - The programm crashed.
   - The XY thingy didn't work the way it should

2. When did it happen?
   - I was using the Tool X and clicked on Y
   - I tried to save the map

3. Which content did you use at this time?
   - Shadows, Particles, Animated Models, ..

4. Have you deserialized (loaded) the scene?

5. Anything else you think that is helpful


Thanks for reporting any bugs!!